The class of 2013 Rivals150 rankings are set to be updated on Tuesday. With that said, there has been plenty to consider since the rankings were last updated back on April 18th. Some players have emerged, while others have stalled or not played up to their rankings. In preparation of their update, we take a look at some of the toughest decisions involved with re-shuffling the rankings for what is turning out to be a very deep class.

Who is No. 1?

Currently, Jabari Parker sits in the top spot and the 6-foot-8 swingman from Chicago (Ill.) Simeon certainly has an impressive body of work. Then again, so do the top two competitors for that first spot. Former No. 1 prospect Andrew Harrison has been outstanding this spring and is coming off another impressive performance at the NBPA Top 100 Camp. But, the 6-foot-5 point guard isn’t the only Texan in the race for No. 1 as 6-foot-9 forward Julius Randle has made a strong case for the top spot as well. A pretty strong argument can be made to put any of the three at the top spot and Parker -- while he’s been quite good -- hasn’t been so dominant that he’s a lock to stay in the top spot.

How many five-stars will there be

After getting a much better feel for the class of 2013 during spring and early summer events, it is quite clear that this class is very strong as a whole. There is a pretty clear group of eight players who have established themselves at the top. The question is, how deep in the rankings will we go at the five-star level? Currently there are 15 five-star prospects in the class. Look for some five-star prospects to be added to the list, making the magic number somewhere around 20 or so.

What to do with Ndiaye?

Exactly what to do with Mamadou Ndiaye has been a very tough decision. The 7-foot-5 big man is maybe the single toughest evaluation in the class of 2013. Is he a legitimate prospect? Or, is he a gigantic guy who comes along, turns some heads at some camps, and then struggles to make the adjustment to basketball beyond the high school level. Right now, the lean is towards legitimate prospect because he has some actual skills to go along with his size. Ndiaye has shown some ability to impact the game on both ends and possesses a bit of a mean streak. However, some more time to evaluate him in July might not be a bad thing before handing out his ranking.

Who is in and who is out?

As mentioned earlier, the class of 2013 is a very deep one. Not to mention, several non-ranked players made strong cases for the rankings during the spring and early summer. On top of that, there are some re-classified players who will have an impact on the rankings. Finding spots for these new players was not easy because, for the most part, the players that were already in the rankings played pretty well. When it’s all said and done, look for somewhere in the neighborhood of 20 new players debuting in the Rivals150 for 2013.